Device for sharpening reamers



Dee. 28 1926.

. 1,612,513 O. KYLIN DEVICE FOR SHARPENING REAMERS Filed July 26 1924INI/EN TOR Patented Dec. 28, 1926.

UNITED STATES OSKAR KYLIN, :OF EiK-ART, INDEANA.

DEVCE FOR SHARPENING .REAMERS Application led July 6,

This invention relates to rcainers, but more especially to devices fOrsharpening the blades of adjustable reamers.

rllhe principal object lof my invention is to providea Vsimple .andcheap device for sharp ening adjustable reamer blades, one which may bereadily adjusted to carry reamers of various sizes.

Other objects of my invention are mentioned and described herein.

The preferred embodiment of my invention is .illustrated in theaccompanying drawing in which Figure 1 is a side elevational view of areamer sharpening device showing a 1reamer yapplied thereto; Fig. 2 isra top plan view thereof;v Fig. 3 is a section taken on line 3 3 of Fig.2; Fig. 4 is a fragment in elevation of the post c arrying the reamerdetent means, partially in section; and Fig. 5 is a top plan view of thehone carrier.

Similar numerals of reference indicate like parts throughout the severalviews on the drawing. l

Referring to the details of the drawing, the numeral 1 indicates themain frame of the dev-ice which is provided with vthe opposed upstandingend bearing brackets 2 and 3, preferably cast in one piece, the latterbeing adapted to carry the adjustable pointed reamer supporting shafts 4and 5 disposed axially of each other and adapted to support the reamer 6in position while the blades -of the latter are being. sharpened.

The bracket 2 Vmay be bored smooth at 7 e to enable slidable adjustmentof the shaft 4 therein, to enable reamers of various lengths to bemounted in the device, and said bracketmay be split longitudinally at 8at one side thereof and provided with a clamping screw 9 to enable theboX 2 to be clamped about the shaft 4 to maintain the adjustment of thelatter. The shaft 5 is -referably screw threaded into the bearing 0Xvbore 10 of box 3 and is provided with a knurled head 11 to enable lineadjustment of said shaft. The box 8 may be split at 12 similar to box 2and provided with a clamping screw 13 to rigidly clamp shaft 5 in thebore 10. lThe shafts4 and 5 are provided with conical points adapted toengage in suitable recesses in the ends of the reamer 6, the' lat- 1924.Serial No. 728,333.

ter vbeing provided with a plurality of blades 14 adjustably mountedtherein, as is well known.

The frame element 1 may be provided at one side thereof with a pair ofintegral spaced brackets 15 and 16 which are suitably axially aperturedto receive and carry the hone bracket bearing shaft 17 therein, saidshaft being held against longitudinal displacement by pins 18 and 19mounted therein adjacent said brackets 16 and 15, respectively. tension20 projecting beyond the bracket 16 for the hereinafter mentionedpurpose. lThe numeral 2lindicates the hone carrier bracket or armsupported bythe shaft 17, the latter engaging loosely in a suitable:bore formed in the hub 22 of said arm to enable the latter to beslidably adjusted to various positions between .the brackets 16 and 17.A

set or thumb screw 23 mounted in the arm hub y22 and adapted to be setagainst the shaft 17 prevents casual longitudinal movement of .the arm21 on said shaft, and a thumb screw 24 threaded into and .through a lug25 projecting downwardly from the arm hub 22, the point whereof engagesthe exterior of the frame 1, is adapted to prevent downward oscillatorymovement of the arm 21, and means whereby rotary adjustment of said armmay be effected.

The arm 21 is arranged at substantially right angles to the reamer 6 andthe axis of the shafts 4 and 5 and the outer end thereof is providedwith a pair of spaced upwardly projecting lugs .26, 26 adapted to form aguideway for they guide bar 28 projecting from Vthe end of the honecarrier 29, the latter beingadapted to have any suitable flat honedetachably mounted therein in any suitable manner, as by set screws 31.The hone 30 is carried on the under side of the carrier v29 and isadapted to rest upon the cutting edge of a reamer blade.14 and vthecarrier bar 28 is arranged between the lugs 26, as specified, wherebymanual reciprol catory movement of the carrier 29 and hone 30 may beeffected transversely of and upon the cutting edge of a reamer blade tosharpen the latter. The lugs 26 of the arm 21 are substantially spacedto permit lateral move ment of the bar 28 and thereby the carrier Theshaft 17 may have an en- 29, whereby the hone may be moved along theface of the blade, within predetermined limits, without adjustment ofthe arm 2l along the shaft 17.

rlhe numeral 32 indicates a detent plate adjustably mounted in the post83 transversely of the reamer 6, said plate being formed preferably ofspring metal and adapted to engage the side of a reamer blade ll toprevent rotary movement of said reamer when the hone is in operation andfor establishing the proper relation between the face of the hone andthe cutting' edge of the reamer blade. rlhe post 33 is carried in asocket or bore vertically formed in a boss projecting from and integralwith the. frame l at one side thereof, said post being verticallymovable in bore 34 and may be maintained in adjustment therein by a setscrew 36. rlhe boss 85 may be provided with a second post socket 37,which may be a duplicate of socket 311;, to enable the post 33 to betransferred thereto when it may be necessary or advisable to place thepoint of the detent plate 32 to bear against the opposite end of areamer blade, in which said socket said post may be vertically adjustedand held in adjustment by a set screw 3S corresponding with screw36.'lhe head or top end of the post 33 may be transversely slotted at 38 tor eeive the plate 32 and a cap 39 may be secured or clamped over andagainst said plate by a cap screw lO threaded through said cap into saidpost head.

In the operation of my improved device the reainer 6 is secured betweenthe carrier pins l and 5 by adjusting the latter, as described, intoengagement with the recessed ends of the reamer body. Thereafter, thecutting edge of a reainer blade le is brought into proper relation withthe flat face of the hone 30 and the detent plate 32 is then adjusted tosnugly engage the side of said blade to prevent rotation of the reamertoward the post 33. hereupon, the operator grasps the reanier 6 with onehand and rec'iprocally operates the hone 30 in contact with the cuttingedge of the reamer ilade with the other hand, eecting longitudinaladjustment of the arm 2l, as described, to hone said blade throughoutits length. 1hen a second or subsequent blade is to be sharpened thereamer is reversely rotated manually to bring said blade into the properposition, the detent plate 32 springing into position, ratchet like,without further adjustment thereof.

lll/*hen a reamer, having blades of unusual length, must be sharpenedthe arm 21 may Leiaeie be transferred from between the lugs l5 and 16 tothe extension 2() of shaft 17.

I claim:

l. A reamer honing device comprising a frame, neans for maintaining areamer in a substantially horizontal position in said frame, astationary arm support arranged parallel with said frame and laterallythereof, an oscillatory arm mounted upon said support and adjustablelongitudinally thereof and independently yof said frame, said arm beingarranged laterally of the reanier, a hone carrier supported by said arm,a boss carried by said frame and provided with a plurality of uprightsockets, a post adapted for selective mounting in said boss sockets andvertically adjustable therein, and a reamer detent element adjustablymounted upon said post.

2. reamer honing device comprising a frame, means for maintaining areamer in a substantially horizontal position in said. frame, astationary arm support arranged parallel with said frame and laterallythereof, an oscillatory arm mounted upon said support and adjustablelongitudinally thereof and independently of said frame, said arm eX-tending laterally of the reamer, a. hone carrier supported by said arm,a boss carried by said frame and provided with a plurality of uprightsockets, a post adapted for selective mounting in said frame bosssockets and vertically adjustable therein, the top end of said postbeing provided with a transverse slot; and a reanier detent elementsecured in said post slot. v

3. A reamer-honing device comprising in combination, a frame providedwith an integral boss on one side and a post-socket in said boss, theopposite side of said frame being provided Vwith a plurality of integralbrackets; means for maintaining a reamer in a substantially horizontalposition in said rame; a shaft mounted in said frame bracketssubstantially parallel with said frame; an oscillatory aan mounted uponsaid shaft and adjustable longitudinally thereon and independently ofsaid frame, said arm being arranged laterally of the reamer; a honecarrier supported by said arm; a post arranged in said post-socket andvertically adjustable therein; a reamer detent element mounted upon saidpost; and means for adjusting said detcnt element, said means includinga cap detachably secured to said post.

ln witness whereof l have hereunto aliixed my signature this 23d day ofJuly, 199A.

OSKAR KYLIN.

